Carbureter.



A G. LAMB, DECD. E. A. LAMB. ADMINISTRATRIX- APPLICATION HLED OCT. 13. I9l3- RENEWED JUNE 19 1916. 1 ,1 92,2 1 3, Patented July 25, 1916 3 SHEETSSHEET 1.

wiwcmo A. G. LAMB, DECD. E. A. LAMB, ADMINISTRATRIX. CARBURETER.

APPLICATION HLED OCT. 13. I913- RENEWED JUNE I9. 1916.

1.1 92,21 3. Patented July 25, 1916.

3 SHEETS-SHEET 2.

A. G. LAMB, DEC'D. E. A LAMB. ADMINISTRATRIX.

CARBURETER. APPUCATION' FILED OCT. 13. 1913;. RENEWED JUNE19. I916.

Patented July 25, 1916.

BSHEETS-SHEET 3 Application filed October 13, 1913, Serial No. 795,009. Renewed June 19, 1916.. Serial No. 104,576.,

' oFFIcE.

AMHERST,G.'LAMB, OF TORRINGTON, CONNECTICUT; ELLA A. LAMB, OF TORRINGTON,

' CONNECTICUT, ADMINISTRATRIX 0F SAID AMHERST G. LAMB, DECEASED.

v CARBUBETER.

To all :hoin it may concern Be it known that I, Auurzns'r j. LAMB, a eitizenjof the United States, residing at -Torr ingten, 'in the county of Litchfield,

Stateof Connecticut, have invented certain new and useful Improvements.1n Carbureters, of which the follo ving is a descrip-' tion; reference being had to the aeci'nnpanying drawing and to the figures of re terence marked thereonl This invention relates to certain new and useful improvements in carhureters, and has for an ohjectthe provision of a carhureter which. is designed 'with successively arranged and operated air inlets, the purpose of which is to dilute the. fuel supply and produce a' mixture of the. pro er constitu encv.

such mixture to the motor. said m ans also ,Const riu-tion.

change the speed of the engine and also when it is desired to uirlvlv develop addi-- tional power;

Another olijcet' l' this invention is the. provision of a earhuretcreapahle of a wide range, f adjustments, thereh gi ving greater flexibility and case when applying and ad justing it to motors ol (.lill'erent t t. and

"ith these and other ohjerts in \'ic\\' the invention further consists in the arrangement and ,:o mhination of parts. all ol' which serve to (llJttlill a maximum ('llieionr) from the fuel used with the slightest amount of expense. 7

lnthe. drawings: Figure l. is a top plan I Fig. is a side elevation. Fig. I, is a vertical sectional viewou the line. I,- I'. of Fig. 1. Fig. 4 is a detached perspeetiw vic\v ol' the. throt tle valve controlling the admission. of the.

Specification of Letters Patent.

Another ohjeet of this invention is to pro{ \ule means for controlling tlu-adnnssiou' of Patented July .65, 1916.

proportion of air and the fluid must be changed under different working conditions of speed and power. This has heen done heretofore by providing air inlets, the arrangements of which have been at convenient positions about the fuel supply valve and the mixing chai'nber. 'llieseflair inlets have entered the. said mixing chandler in all directions and upon all sides o tltlhe fuel supply, and have beenprincipally designed to ompact the structure of the carhurcter and economize spacef I in designing thepresent invention the successively arranged and opcratedair inlets have been positioned.\vitli "i'eat'care to produce a continuous tlou" of air in one direction to dilute the fuel supply and initially used air to a. certain mixing point, from whence the .commingled particles. are prosented to the motor .vvithoiit further inter ruption or molestation from other air supplies or interrupting injections.

'lveferring. to the. dra'\vings tlie. carhureter consists of an oil or fuel ,supply. the fuel passing, therethrongh lieing adapted to he. diluted lrv three distinct ources t'admitted air. 'lhese air injcctimis will he re ferreitto as the primary, auxiliary and sup ilementacy air inlets. The first named is u ed initiall and serves to produce a mixture eapahle. f orilinai pslow speed, or l iv throttle work. The secondv named or auxiliary is designed to augment the. initial air supply and is eontrolle d through the. same. means which operatesthethrottle and the fuel supply. The third named or supplenu-utary is wholly dependent upon the speed attained hy the m t r. flhis latter air inlet still further adds to the alrea y dilntedinixture and produces a. mixture'ot lean constituency. v

The preferred cniliodimcnt ot; .my inven tion, consists of a mixing chainlie.r l lniving the. outlet 2 whichcomn'iunicatfs with themanifold or other suitable. means provided on the motor. Arranged iualinement with the mixing chamher l and outlet. 2 is an air compartment 3' having the auxiliary-a r inlet valve 4 am] the supplementary air anlet valve 5 located therein.

Secured to the mixing chauiher is the. float chamber (3 through which extends a passageway 8 formed by the tubular memher 7.

The tloat 9 is hollow and loosely surllO rounds the member 7, as shown in Figs. 3 and 5. The upper end of the float is provided with an annular recess into which fits one end of the lever 10. The other end of the lever 10 is connected to the fuel inlet valve 11 by means of a similar annular recess formed upon the valve stem 12. A suitable pivot 13 is provided for the lever 10 and consists of an adjustable post 14 which ex- I tends through the top of the float chamber. The screw threaded extension 15 of thesaid post is held by means of the nuts 16 in a protruding arm 17, which latter is clamped between the mixing chamber and the float chamber, and is held by one of the screws 18 which hold these said sections together. By this construction, it will be readily seen that ample adjustment is afforded the fuel inlet valve, and the relative operation of the float for controlling the same.

Positioned within the tubular member 7 is a hollow tubular connection 19. This connection 19 has communication with the exterior of the tubular member 7 and is preferably terminated in oppositely disposed grooves 20 formed upon the outer sides of the tubular member.. These grooves 20 extend well down into the float chamber and serve to direct the fuel into the tubular connection 19. From the passageway in this tubular connection the fuel is directed upwardly through the nozzle 21. which is secured to this connection 19. The upper end of the nozzle 21 is provided with a seat 22 which receives the valve 23. The valve 23 f is herein designated as the fuel supply valve and consists of a conical shaped portion 24. An extension 25 continues from the cone portion and fits into the passageway in the nozzle 21. Grooves 26 are provided in this.

extension 25 through which the fuel is allowed to pass when the cone portion is lifted off its seat. I

The purpose of providing a valve of this character is to insure a uniform discharge of the fuel from the nozzle 21 and it will be obvious that because of the centering of the valve 23 the fuel will be sprayed evenly from the nozzle.

Acting in conjunction with the spray nozzle 21 is a Venturi tube 27, the purpose of which is to thoroughly mix the fuel with the primary charge of air. This tube is provided with the lower cone portion 28, the angle, being a true Venturi angle and directed to a point just beneath the upper edge or seat of the spray nozzle. An upper cone portion 29 is also formed in said tube and extends upwardly at the proper Venturi angle. By arranging this Venturi tube in this manner a highly efficient spray of fuel and air is obtained and presented to the mixing chamber at right angles to the line of directions of the additional diluting air.

The valve 23 which controls the fuel supmember 30 is a collar-33 having an arm 34 and means for clamping said collar about this upper portion 32.

A flange 35 is formed on the member 30 and serves to seat the said member upon the boss 1". A locking nut 36, is provided on the stem of the valve andsecures the valve in its desired position when once adjusted. By this construction it will be .seen that any movement imparted to the arm 34 will, when the collar 33 is securely clamped to -the member 30, rotate the member 30 and its other parts as a unit, and because of the' steep threads thereon lift the valve 23 off of its seat, thereby allowing the fuel to pass through the Venturi tube together with the primary air drawn in.

To adjust the fuel supply valve, the valve is screwed down on its seat through the member 30. This member 30 is normally positioned within the boss 1 so that the flange 35 rests thereon. The arm 34 is then moved to.its farthest position as shown in Fig. 1 until stopped. The collar is then clamped around the member 30 so as to turn with'it. The lock nut is now'forced down upon the collar 34. \Vhen in this position, it will readily be seen that a movement of the arm in a counter-clockwise direction as viewed in Fig. 1 will rotate the member 30 and because of the steep threads thereon cause the valve to lift from its seat and admit the fuel.

Should a greater amount sired the lock nut may be loosened and the valve opened, when it" is again locked. In this latter position the fuel supply valve is normally open to admit a small amount of fuel. The primary air inlet acts in conjunction with the fuel and produces a mixture for ordinary work.

The throttle valve 37 is located near the outlet of the mixing chamber, and is connected to the fuel supply valve through the link 38 which is pivoted to the end of the arm 34 and swiveled in the upper end of an adjustable post 39. This post is adjustable in a block 40 which issecured to the cross shaft 41 by a set screw 42. To this shaft is fastened the throttle valve 37. A set screw 41 holds thagpost in its adjusted position. Upon the opposite end of the cross shaft 41 is secured a lever 43 with a suitable connection 44 to the operator of the throttle.

(onnected to the throttle valve 37 and the fuel supply valve 23 and adapted to operate of fuel be de-.

therewith is the auxiliary air valve 4. This ;,connection comprises a post 46 adjustably mounted within the block 0 by the set screw 47. Swiveled to the upper end of the post 16 is the connection lS, consisting of right and left threaded rods 49 and the turn buckle 50. One of the rods 41-) is swiveled to an arm extending from the auxiliary valve 4. The auxiliary valve operates in conjunction with a covering plate 51 secured to the chamber 3.

Openings are provided'in the valve t which is in the form of a dislc, and are adapted to register with corresponding openings in the cover plate 51. Any oscillation of the valve 4 will either open or close the openings through which the auxiliary air is admitted, as will be readily understood and later more fully described.

This auxiliary valve el turns about the stem 54 which is slidahly positioned in bearing supports at the upper and lower side of the air chamber 3. Stay bolts 56 extend through the chamber and hold the respective supports and other attending mechanism in assembled position.

The su lementar air valve 5 is arra'n ed on the lower side of the airchamber 3 and is adapted to lift by reason of the suction through the spring and adjusting nut when suction is produced in the motor. A valve 60 is positioned within the chamber 1 and serves to aid in starting when the air to be' admitted is cold.

' In adjusting the carburetor, the source of fuel supply or fuel supply valve -23 is first positioned on its seat, the collar 23 carrying the arm 3-H- having been clamped around the member 30, as hereinbefo're described. lhe

post 39 with its link connection is then'adjusted in the block 40; a lowering of the post reducing the distance of travel of the arm 3+ and consequently the mei'nher 30 in lifting the fuel supply valve, and the eicvating thereof increasing the path of. travel of said arm and the member 30. The post =lfi witli'its rods and turn buckle connections to the auxiliary valve, is now adjusted in the block 40. a lo\vi,-,rin;, of. the post causing the openings'in the valve 45 to register with corresponding openings in the cover plate but for a Yer) short dista ice. The auxili.-ir v air inlet in this position is consequently small. in elevating ilit post a greater throw is llli])2lltt.\l t0 the auxiliary valve 4 and a larger amount of air is admitted. lvhon the correct throw has been attaiued, the turn buckle is thou operated to bring the valve back to its initial position when the throttle valve is moved all the way back.

air supply valverespectively, produce anoperation of all these. parts in unison through the moving of the throttlelever connections. 'lheretore, it will be apparent that an increase of fuel supply will be iinmediately augmented byv an additional air supply, other than the primary charge of airtalten in initially, and, that a continued in crease of the fuel will proportionally produce a corresponding proportionate amount of air and, therefore, a more homogeneous mixture automatically.

\V hen a certain speed has been attained-the supplementaryair valve 'is brought into op eration and further augments the mixtureto the highest possible degree oi ef'l'iciency.

By arranging the auxiliary,-and supplementary air lnlets upon oneside of the .i nixture as it [5 initially presented, and-positioning the mixing chamber-and its outletfso as to receive air in alineinent therewith from the said additional. air inlets-a more heinogeneous mixture is prodiiceihtl e efficiency and. extreme economy of which are highly.

advantageous. Thus it will be obvious that the hereindescribed (-.:ii'luireter. is capable of meeting the efficiency demands in this art and at thesame time with a minimum consumption of fuel. j

Having thus fully i'lescribed my Lion, what I claim is:

l: A carburetor including in combination a mixing chamber, a source of fuel supply, an air passage surrounding said furl supply, an outlet for said inixiiig ('hauiluwr. and means for augmciitiup the combined i uel and air, unwinding a 'iluralit'y of. air inlet valves arrz-ingrd upon. one side of said fuel supply so as to direct the air in alini-ment with the outiet and at right angles to the fuel supply.

1.. A (.2lll)lli(i,(.l including in combination a chamber provided with an outlet, a $OllIi't0 of fuel supply for the. explosive mixture de livrrine to said I clmmluu,

invena cont-roiling vnlvifor regulating the llow of said mixture to said outlet. means connected to said controlling \alvc l (H' automatically admitting additional furl and additional air to said mixturr at right angles to each other, :aiid nu-aus operating iiule 'ioiulriit of said controlling valve for admitting still further additional air to said mixture, so as to direct the additional air in alinement with the outlet and at right angles to the fuel supply.

3. A carbureter including in combination a mixing chamber provided with an outlet, a source of fuel supply for the explosive mixture delivering to said mixing chamber at right angles thereto, a controlling valve for regulating the flow of said mixture to said outlet, an air inlet valve arranged to one side of said mixing chamber for admitting air in alinement with the outlet and at right angles to the fuel supply, and means including connections between the source of fuel supply, controlling valve and said air inlet valve whereby the several parts are moved simultaneously for proportionately augmenting the mixture.

4. A carburoter including in combination a mixing chamber provided with an outlet, a, source of fuel supply for the explosive mixture delivering to said mixing chamber, a controlling valve for regulating the flow of said mixture to said outlet, and means including a plurality of valved controlled air inlets arranged to present the air in alinement with said outlet in said mixing chamber and to one side of the fuel supply for augmenting the explosive mixture.

5. A carbureter mcluding in combination a mixing chamber provided with an outlet, afuel supply valve for the explosive mixture delivering to said mixing chamber, a controlling valve for regulating the flow of said mixture to said outlet, a valve controlled air inlet arranged to one side of said mixing chamber above the fuel supply valve for delivering air in alinement with the outlet and at right angles to the fuel supply, and means including adjustable connections between the fuel supply valve, controlling valve and valved controlled air inlet for proportioning the quantity of air and fuel desired.

6. A carbureter including in combination a mixing chamber provided with an outlet, a source of fuel supply for the-explosive mixture delivering to said mixing chamber, comprising an inlet nozzle and valve arranged within an air passageway, said nozzle having communication with a Venturi tube for commingling the particles of the explosive mixture and air, a controlling valve for regulating the flow of said explosive mixture to said outlet, and means connected to said controlling valve for admitting additional fuel and additional air to said mixture.

7. A carbureter including in combination a mixing chamber provided with an outlet, a source of fuel supply for the explosive mixture delivering to said mixing chamber, consisting of a float chamber, an air passageway through said chamber formed by a member separating the float chamber from said air passageway, a nozzle arranged in said air passageway and having communication with the float chamber, and a valve for said nozzle, a controlling valve for regulating the flow of said explosive mixture to said outlet, and means connected to said controlling valve for admitting additional fuel and additional air to said mixture.

In testimony whereof, I aflix my signature, in the presence of two witnesses.

AMHERST G. LAMB.

\Vitnesses JAMES E. MALLETTE, H. M. EIDNER. 

